<!-- edu_15_1_2.html -->
<!doctype html>
<html lang="en">
 <head>
  <meta charset="UTF-8">
		<title> JavaScript中地动态指定</title>
		<style type="text/css">
			#inp{width:100px;height:40px;color:red;}
		</style>
	  <script type="text/javascript"> 
	function clickHandler()
  {
     alert("代码触发事件，即将提交表单！");
	   return true;
  } 
  </script>
 </head>
 <body>
  <form name="myform" method="post" action="" >
	<input id="inp" type="button" name="mybutton" value="提交" >
  </form>   
      <script type="text/javascript">
      //向 button 元素动态分配 onclick 事件
       document.getElementById('inp').onclick=function(){return clickHandler();}       
        myform.mybutton.onclick();  //程序触发
  
   </script>
     </body>
</html>